src/game/level.c

   1 #include <SDL2/SDL.h>
   2 #include <assert.h>
   3
   4 #include "color.h"
   5 #include "game/camera.h"
   6 #include "game/level.h"
   7 #include "game/level/background.h"
   8 #include "game/level/boxes.h"
   9 #include "game/level/goals.h"
  10 #include "game/level/labels.h"
  11 #include "game/level/lava.h"
  12 #include "game/level/physical_world.h"
  13 #include "game/level/platforms.h"
  14 #include "game/level/player.h"
  15 #include "system/error.h"
  16 #include "system/lt.h"
  17 #include "system/lt/lt_adapters.h"
  18
  19 struct level_t
  20 {
  21     lt_t *lt;
  22
  23     physical_world_t *physical_world;
  24     player_t *player;
  25     platforms_t *platforms;
  26     goals_t *goals;
  27     lava_t *lava;
  28     color_t background_color;
  29     platforms_t *back_platforms;
  30     background_t *background;
  31     boxes_t *boxes;
  32     labels_t *labels;
  33 };
  34
  35 level_t *create_level_from_file(const char *file_name)
  36 {
  37     assert(file_name);
  38
  39     lt_t *const lt = create_lt();
  40     if (lt == NULL) {
  41         return NULL;
  42     }
  43
  44     level_t *const level = PUSH_LT(lt, malloc(sizeof(level_t)), free);
  45     if (level == NULL) {
  46         throw_error(ERROR_TYPE_LIBC);
  47         RETURN_LT(lt, NULL);
  48     }
  49
  50     FILE *level_file = PUSH_LT(lt, fopen(file_name, "r"), fclose_lt);
  51     if (level_file == NULL) {
  52         throw_error(ERROR_TYPE_LIBC);
  53         RETURN_LT(lt, NULL);
  54     }
  55
  56     char color[7];
  57     if (fscanf(level_file, "%6s", color) == EOF) {
  58         throw_error(ERROR_TYPE_LIBC);
  59         RETURN_LT(lt, NULL);
  60     }
  61     level->background_color = color_from_hexstr(color);
  62
  63     level->player = PUSH_LT(lt, create_player_from_stream(level_file), destroy_player);
  64     if (level->player == NULL) {
  65         RETURN_LT(lt, NULL);
  66     }
  67
  68     level->platforms = PUSH_LT(lt, create_platforms_from_stream(level_file), destroy_platforms);
  69     if (level->platforms == NULL) {
  70         RETURN_LT(lt, NULL);
  71     }
  72
  73     level->goals = PUSH_LT(lt, create_goals_from_stream(level_file), destroy_goals);
  74     if (level->goals == NULL) {
  75         RETURN_LT(lt, NULL);
  76     }
  77
  78     level->lava = PUSH_LT(lt, create_lava_from_stream(level_file), destroy_lava);
  79     if (level->lava == NULL) {
  80         RETURN_LT(lt, NULL);
  81     }
  82
  83     level->back_platforms = PUSH_LT(lt, create_platforms_from_stream(level_file), destroy_platforms);
  84     if (level->back_platforms == NULL) {
  85         RETURN_LT(lt, NULL);
  86     }
  87
  88     level->boxes = PUSH_LT(lt, create_boxes_from_stream(level_file), destroy_boxes);
  89     if (level->boxes == NULL) {
  90         RETURN_LT(lt, NULL);
  91     }
  92
  93     level->labels = PUSH_LT(lt, create_labels_from_stream(level_file), destroy_labels);
  94     if (level->labels == NULL) {
  95         RETURN_LT(lt, NULL);
  96     }
  97
  98     level->background = PUSH_LT(lt, create_background(level->background_color), destroy_background);
  99     if (level->background == NULL) {
 100         RETURN_LT(lt, NULL);
 101     }
 102
 103     level->physical_world = PUSH_LT(lt, create_physical_world(), destroy_physical_world);
 104     if (level->physical_world == NULL) {
 105         RETURN_LT(lt, NULL);
 106     }
 107     if (physical_world_add_solid(
 108             level->physical_world,
 109             player_as_solid(level->player)) < 0) { RETURN_LT(lt, NULL); }
 110     if (boxes_add_to_physical_world(
 111             level->boxes,
 112             level->physical_world) < 0) { RETURN_LT(lt, NULL); }
 113
 114     level->lt = lt;
 115
 116     fclose(RELEASE_LT(lt, level_file));
 117
 118     return level;
 119 }
 120
 121 void destroy_level(level_t *level)
 122 {
 123     assert(level);
 124     RETURN_LT0(level->lt);
 125 }
 126
 127 int level_render(const level_t *level, camera_t *camera)
 128 {
 129     assert(level);
 130
 131     player_focus_camera(level->player, camera);
 132
 133     if (camera_clear_background(camera, level->background_color) < 0) {
 134         return -1;
 135     }
 136
 137     if (background_render(level->background, camera) < 0) {
 138         return -1;
 139     }
 140
 141     if (platforms_render(level->back_platforms, camera) < 0) {
 142         return -1;
 143     }
 144
 145     if (player_render(level->player, camera) < 0) {
 146         return -1;
 147     }
 148
 149     if (boxes_render(level->boxes, camera) < 0) {
 150         return -1;
 151     }
 152
 153     if (lava_render(level->lava, camera) < 0) {
 154         return -1;
 155     }
 156
 157     if (platforms_render(level->platforms, camera) < 0) {
 158         return -1;
 159     }
 160
 161     if (goals_render(level->goals, camera) < 0) {
 162         return -1;
 163     }
 164
 165     if (labels_render(level->labels, camera) < 0) {
 166         return -1;
 167     }
 168
 169     return 0;
 170 }
 171
 172 int level_update(level_t *level, float delta_time)
 173 {
 174     assert(level);
 175     assert(delta_time > 0);
 176
 177     physical_world_apply_gravity(level->physical_world);
 178
 179     boxes_update(level->boxes, delta_time);
 180     player_update(level->player, delta_time);
 181
 182     physical_world_collide_solids(level->physical_world, level->platforms);
 183
 184     player_hide_goals(level->player, level->goals);
 185     player_die_from_lava(level->player, level->lava);
 186
 187     goals_update(level->goals, delta_time);
 188     lava_update(level->lava, delta_time);
 189     labels_update(level->labels, delta_time);
 190
 191     return 0;
 192 }
 193
 194 int level_event(level_t *level, const SDL_Event *event)
 195 {
 196     assert(level);
 197     assert(event);
 198
 199     switch (event->type) {
 200     case SDL_KEYDOWN:
 201         switch (event->key.keysym.sym) {
 202         case SDLK_SPACE:
 203             player_jump(level->player);
 204             break;
 205         }
 206         break;
 207
 208     case SDL_JOYBUTTONDOWN:
 209         if (event->jbutton.button == 1) {
 210             player_jump(level->player);
 211         }
 212         break;
 213     }
 214
 215     return 0;
 216 }
 217
 218 int level_input(level_t *level,
 219                 const Uint8 *const keyboard_state,
 220                 SDL_Joystick *the_stick_of_joy)
 221 {
 222     assert(level);
 223     assert(keyboard_state);
 224     (void) the_stick_of_joy;
 225
 226     if (keyboard_state[SDL_SCANCODE_A]) {
 227         player_move_left(level->player);
 228     } else if (keyboard_state[SDL_SCANCODE_D]) {
 229         player_move_right(level->player);
 230     } else if (the_stick_of_joy && SDL_JoystickGetAxis(the_stick_of_joy, 0) < 0) {
 231         player_move_left(level->player);
 232     } else if (the_stick_of_joy && SDL_JoystickGetAxis(the_stick_of_joy, 0) > 0) {
 233         player_move_right(level->player);
 234     } else {
 235         player_stop(level->player);
 236     }
 237
 238     return 0;
 239 }
 240
 241 int level_reload_preserve_player(level_t *level, const char *file_name)
 242 {
 243     lt_t * const lt = create_lt();
 244     if (lt == NULL) {
 245         return -1;
 246     }
 247
 248     /* TODO(#104): duplicate code in create_level_from_file and level_reload_preserve_player */
 249
 250
 251
 252     FILE * const level_file = PUSH_LT(lt, fopen(file_name, "r"), fclose_lt);
 253     if (level_file == NULL) {
 254         throw_error(ERROR_TYPE_LIBC);
 255         RETURN_LT(lt, -1);
 256     }
 257
 258     char color[7];
 259     if (fscanf(level_file, "%6s", color) == EOF) {
 260         throw_error(ERROR_TYPE_LIBC);
 261         RETURN_LT(lt, -1);
 262     }
 263     level->background_color = color_from_hexstr(color);
 264
 265     player_t * const skipped_player = create_player_from_stream(level_file);
 266     if (skipped_player == NULL) {
 267         RETURN_LT(lt, -1);
 268     }
 269     destroy_player(skipped_player);
 270
 271     platforms_t * const platforms = create_platforms_from_stream(level_file);
 272     if (platforms == NULL) {
 273         RETURN_LT(lt, -1);
 274     }
 275     level->platforms = RESET_LT(level->lt, level->platforms, platforms);
 276
 277     goals_t * const goals = create_goals_from_stream(level_file);
 278     if (goals == NULL) {
 279         RETURN_LT(lt, -1);
 280     }
 281     level->goals = RESET_LT(level->lt, level->goals, goals);
 282
 283     lava_t * const lava = create_lava_from_stream(level_file);
 284     if (lava == NULL) {
 285         RETURN_LT(lt, -1);
 286     }
 287     level->lava = RESET_LT(level->lt, level->lava, lava);
 288
 289     platforms_t * const back_platforms = create_platforms_from_stream(level_file);
 290     if (back_platforms == NULL) {
 291         RETURN_LT(lt, -1);
 292     }
 293     level->back_platforms = RESET_LT(level->lt, level->back_platforms, back_platforms);
 294
 295     boxes_t * const boxes = create_boxes_from_stream(level_file);
 296     if (boxes == NULL) {
 297         RETURN_LT(lt, -1);
 298     }
 299     level->boxes = RESET_LT(level->lt, level->boxes, boxes);
 300
 301     labels_t * const labels = create_labels_from_stream(level_file);
 302     if (labels == NULL) {
 303         RETURN_LT(lt, -1);
 304     }
 305     level->labels = RESET_LT(level->lt, level->labels, labels);
 306
 307     physical_world_clean(level->physical_world);
 308     if (physical_world_add_solid(
 309             level->physical_world,
 310             player_as_solid(level->player)) < 0) { RETURN_LT(lt, -1); }
 311     if (boxes_add_to_physical_world(
 312             level->boxes,
 313             level->physical_world) < 0) { RETURN_LT(lt, -1); }
 314
 315     RETURN_LT(lt, 0);
 316 }
 317
 318 int level_sound(level_t *level, sound_samples_t *sound_samples)
 319 {
 320     if (goals_sound(level->goals, sound_samples) < 0) {
 321         return -1;
 322     }
 323
 324     if (player_sound(level->player, sound_samples) < 0) {
 325         return -1;
 326     }
 327
 328     return 0;
 329 }
 330
 331 void level_toggle_debug_mode(level_t *level)
 332 {
 333     background_toggle_debug_mode(level->background);
 334 }
 335
 336 int level_enter_camera_event(level_t *level,
 337                              const camera_t *camera)
 338 {
 339     goals_cue(level->goals, camera);
 340     goals_checkpoint(level->goals, level->player);
 341     labels_enter_camera_event(level->labels, camera);
 342     return 0;
 343 }